The Echo1 Advance Squad Carbine (A.S.C.) Airsoft gun is a well balanced yet affordable Echo1 gun with many features and characteristics. One of the first things that is noticeable right out of the box is the A.S.C. s color and finish a blend of tan with black parts and olive magazine grip. It has four picatinny rails Top: 16″ Bottom: 7″ Sides: 4″. It also comes standard with folding front and rear sights a retractable folding SCAR style stock and removable foregrip. The battery is located within the stock and is accessible by pressing a button on the stock and opening the battery compartment. As far as accessories go the A.S.C. comes with 2 high capacity magazines one 2 3A 1200mAh 1.2V battery battery charger and a 4″ barrel extension. Features: * Weight: 3.5 kg 7.71 lb * Barrel Length: 384 mm 15.11 in * Inner Barrel Length: 300mm 11.81 in * Barrel Caliber: 6.08 mm * BB Capacity: 450Rounds 100Rounds (2 magazines two different sizes) * Initial BB Speed: 360 380 fps * Battery Type: Mini Type (8.4V) * Side Folding Retractable Stock * Flip Up Front and Rear Sight * Front and Rear Sling Attachment Point * Ambidextrous Magazine Release * Full Metal Upper Receiver * Polymer Lower Receiver * Reinforced Gearbox with 7mm Bearing * Enhanced Hop Up System All Airsoft replica BB guns include a safety orange muzzle tip in accordance with Federal law. Any attempt to remove the orange tip is a violation of Federal law. Modified Airsoft Guns will not be accepted for return or exchange. Airsoft Gun BB Warning You must use .20 gram or higher AEG Quality Airsoft BB s with this Airsoft Gun. Using .12gram re used low quality low grade translucent or BBs purchased from large discount stores or major retail sporting good chains will void the warranty on your Airsoft Gun. High quality bb s meant for your AEG will enhance your playing experience and save you money in repairs down the road. Zephyr Sports Airsoft Battery Disclaimer: Zephyr Sports is not responsible for batteries that have been damaged as a result of improper operation storage misuse or abuse accident or neglect such as physical damage resulting from misuse contact with liquid water rain extreme humidity or heavy perspiration sand dirt or the like extreme heat or food use of the battery for commercial purposes or subjecting the battery to abnormal usage conditions or other acts which are not the fault of Zephyr Sports. Make sure you understand how your battery should be used and how long it should be charged. We recommend that you always use a smart charger to avoid damaging your airsoft batteries. If you have any doubt regarding the operation charging or storage of your battery and or charger please contact us. A charging battery should not be left unattended and should be picked up periodically while charging to check for overheating. Do not charge batteries near flammable material.